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major reference

...of this work was known to the Latin pseudepigrapher who called himself Geber (transliterated from the Arabic Jābir), who wrote the
Summa perfectionis magisterii (
The Sum of Perfection or the Perfect Magistery), possibly the most famous alchemical book of the Middle Ages. Probably composed in the late 13th century by a Franciscan monk known as Paul of...

discussed in biography

Four works by Geber are known:
Summa perfectionis magisterii (
The Sum of Perfection or the Perfect Magistery, 1678),
Liber fornacum (
Book of Furnaces, 1678),
De investigatione perfectionis (
The Investigation of Perfection, 1678), and
De inventione veritatis (
The Invention of Verity, 1678). They are the clearest expression of alchemical...

history of alchemy

...between two Arabs, Iahiae Abindinon and Geber Abinhaen, who were probably two versions of the name of Jābir ibn Ḥayyān. The most famous Jābirian work in Europe,
The Sum of Perfection, is now thought to have been an original European composition. At about this time personal reminiscences of alchemists began to appear. Most famous was the Paris notary...